Fragrance Longevity in Shampoo with Deodorizing Agents

Here are answers to your questions regarding fragrance longevity in shampoo when using deodorizing agents and fragrance fixatives:

1. Effect of Deodorizing Agents on Fragrance Longevity

Yes, adding certain deodorizing agents to a shampoo formula can affect the longevity of the fragrance. Some deodorizing agents work by absorbing odor molecules. If the deodorizing agent absorbs fragrance molecules as well, it can reduce the intensity and duration of the fragrance in the product and on the hair after washing. For example, products like Odor-Kill™ are noted to absorb fragrance and are not suitable for formulas with perfumes.

2. Improving Longevity: More Fragrance vs. Fragrance Fixative

If a deodorizing agent is affecting fragrance longevity, adding a fragrance fixative is generally a more effective approach than simply increasing the fragrance concentration. Fragrance fixatives like Sugar Fix™ are specifically designed to help extend the life of the perfume by slowing down its evaporation. While increasing fragrance might make the initial scent stronger, it may still dissipate quickly if absorbed by a deodorizer or due to the nature of the formula. However, be mindful that using a fragrance fixative at too high a rate might paradoxically make the perfume smell weaker, as noted for Sugar Fix™.

3. Improving Scent Longevity in a Standard Shampoo Formula

In a standard shampoo formula without additional deodorizing agents, using 2% fragrance and 2% Sugar Fix™ should provide a noticeable scent during washing. If the scent doesn't last on the hair as long as desired, consider the following:

• Increase Sugar Fix™ Concentration: You are currently using 2% Sugar Fix™. The recommended usage rate is 1-5%. You could try increasing the concentration up to 5% to see if it improves longevity. However, avoid exceeding the maximum recommended rate, as it might weaken the scent.
• Fragrance Type: Some fragrances are inherently more volatile than others. Fragrances designed specifically for wash-off products or those containing heavier base notes tend to last longer.
• Shampoo Base: The specific shampoo base and its ingredients can also influence how well a fragrance performs and lasts.
• Consider Stronger Fixatives: While Sugar Fix™ is effective, other fixatives might offer even greater longevity depending on the desired effect and product type (though Sugar Fix™ is suitable for this application). However, always check compatibility and recommended usage for shampoo.

Achieving long-lasting scent in a wash-off product like shampoo can be challenging compared to leave-on products, but optimizing the fragrance type and fixative concentration can help improve performance.